CN101506080B - Elavator system - Google Patents
Elavator system Download PDFInfo
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- CN101506080B CN101506080B CN2007800303587A CN200780030358A CN101506080B CN 101506080 B CN101506080 B CN 101506080B CN 2007800303587 A CN2007800303587 A CN 2007800303587A CN 200780030358 A CN200780030358 A CN 200780030358A CN 101506080 B CN101506080 B CN 101506080B
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- Prior art keywords
- elevator
- lift car
- limit
- elevator device
- speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/32—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on braking devices, e.g. acting on electrically controlled brakes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
- B66B1/44—Means for stopping the cars, cages, or skips at predetermined levels and for taking account of disturbance factors, e.g. variation of load weight
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Elevator Control (AREA)
Abstract
The elevator system incorporates a safety arrangement and a control of the safety arrangement. The safety arrangement comprises at least one mechanical stopping appliance and the control of the safety arrangement comprises at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car. The control also comprises measurement of time and the limit value is defined as a function of time. In the method for ensuring safety in an elevator system at least one mechanical stopping appliance is fitted to the safety arrangement of the elevator system and at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car is set for the control of the safety arrangement. The passage of time is measured and at least one limit value of the control of the safety arrangement is set as a variable function with respect to time.
Description
Technical field
The present invention relates to a kind of elevator device, and a kind of method that is used for guaranteeing at elevator device safety.
Background technology
In the elevator device, make great efforts to guarantee that to greatest extent occupant's safety is important.When opening, lift car can not move on to outside the diamond, all cannot freely fall at any stage lift car, and the motion of lift car can not reach not controlled accelerated movement or not controlled decelerated movement.For this cause, electric elevator installation comprises many safety and shutdown feature, and these devices are responsible for stopping of lift car under normal conditions and failure situations.
The control system of elevator is controlled the driving of elevator from the floor to the floor.During driven, in acceleration and moderating process, the control system of elevator guarantees that for example the speed of elevator reduces, and guarantees that elevator is parked in the solution space of floor.Control system also stops the elevator smoothly at terminal floor.If the elevator by means of control system normally stops not work, then (Normal Terminal Slowdown NTS) controls elevator and steadily stops in terminal floor normal terminal slowdown.
If normal terminal slowdown (NTS) stopped elevator with failing when elevator arrived well terminal, then ETSL (Emergency Terminal Speed Limiting, urgent terminal velocity restriction) uses mechanical brake to stop elevator.Mechanical brake is a kind of dynamo-electric brake, is arranged to usually be connected with the traction sheave of elevator in case of necessity.If the deceleration/decel of elevator is not enough, ETSL can also use drg or the wedge brake of lift car, emergency gear just, is used to stop.
Fig. 1 has presented the operation of the safety device of modem elevator system.Curve 11 is illustrated as distance and function of speed with advancing of elevator.
(over governor OSG) can be used as safety device to the overspeed governor of machinery.The speed of overspeed governor monitoring lift car in elevator, and, if the speed of lift car (for example surpasses certain preset limit value; 6m/s); Overspeed governor then breaks off the safety return circuit of elevator, in this case, and mechanical brake play a role (zone 12).Elevator comprises safety return circuit, if any switch opens that connects that is attached thereto is then cut off safety return circuit.If hypervelocity still increases from preceding value, then overspeed governor uses the emergency gear relevant with lift car (zone 16), and its chock chucking cage guide also prevents that lift car from sliding.In other words, if cable wire or rope suspensions fail and lift car begin free fall, then emergency gear is wedged and chucking.
Supervelocity also can be monitored with electric means.For example; Document WO 00/39015 discloses a solution, and wherein, the electrical overspeed monitoring device receives the signal of expression car speed; Car speed and the speed limit data that is stored in the memory device of monitoring device are compared; And, then produce actuation signal if necessary, can engage the drg of elevator by means of this actuation signal.
End near elevator is a dead space switch.The position of this dead space switch is labeled as x1 in Fig. 1.If elevator does not stop before dead space switch, then cut off the safety return circuit of elevator once more, and elevator brake is worked.If elevator has been crossed for example 100mm of destination stop, then dead space switch uses the mechanical brake lift car (zone 12) that stops.
If elevator continues several centimetres forward from dead space switch, car (or corresponding counterweight) bumps against with energy disperser 13, energy disperser 13 pressurizeds and the depression and the elevator that finally stops.Also have living space 14 after the energy disperser 13, after space 14, then meet with the cement concrete end structure 15 of well.Fig. 1 has presented the well construction that especially has the elevator device of counterweight.In not having the elevator of counterweight, the buffer structure on well top can be lighter than following energy disperser, and is descending because not controlled motion can only appear at.
Even normal control system is malfunctioning, the trip distance that the total length energy disperser is had reaches such amount, and it is driven in principle at full speed also is safe on the energy disperser, and before lift car stopped, the acceleration/accel in the car can not surpass yet allowed restriction.Typically, 1g is the acceleration/deceleration that a kind of people of setting in the safety procedure can bear.
Use in the elevator device that has so-called " subtracting the stroke energy disperser ".In this case, use electrical safety to connect (electrical safety connection) as the accessory equipment that stops car.From the terminal a distance of well one switch is being installed, the speed limit of this switch for example is 90% of a normal speed.In the end that is close to well slightly second switch is installed, the speed limit of this second switch for example is 60% of a normal speed.If speed surpasses the speed of allowing in the location point place of switch, then cut off safety return circuit once more, and mechanical brake stops lift car.If hypervelocity still increases from preceding value, then the safety system of elevator is used the emergency gear relevant with the lift car car that stops.
Authoritative institution about the elevator safety country variant has different regulations.Fundamental principle is that elevator must comprise a kind of safety system that can under failure situations, elevator stopped.For example, according to the elevator rules 95/16/EC of European Union's promulgation, elevator must comprise overspeed governor and speed monitoring system.Elevator can not reach not controlled accelerated movement or not controlled decelerated movement.In addition, following situation must be avoided: when door is opened, stop the district owing to the malfunctioning situation in for example rope slip or the mechanical brake causes lift car to begin to skid off.
Summary of the invention
The objective of the invention is, propose a kind of new mode and a kind of safe and reliable elevator device that is used for guaranteeing safety at elevator device.Especially, the objective of the invention is, disclose a kind of method and a kind of elevator device that does not have counterweight that is used for guaranteeing safety at the elevator device that does not have counterweight; By means of this method and elevator device, can prevent lift car non-motion of having a mind in floor zone, can prevent the hypervelocity situation of lift car again; And guarantee that the controlled of elevator stops; And when the safety apparatus et out of order of prior art, this do not have the elevator device of counterweight can guarantee stopping of lift car yet.
Some invention embodiments also have been discussed in declaratives and the application's accompanying drawing.The application's summary of the invention also possibly be different from ground qualification in the accompanying claims.If especially according to expressing or implicit subtask or classification consideration the present invention of reaching advantage according to the viewpoint or the institute of advantage, content then of the present invention also possibly be made up of several independent inventions.In this case, according to the viewpoint of independent invention notion, some attribute that is included in the accompanying claims possibly be unnecessary.The characteristic of different embodiments can be used with other embodiments in the scope of basic inventive concept.In addition, with the characteristic that proposes according to the method for the invention, can in elevator device according to the present invention, use, vice versa.
The present invention relates to a kind of elevator device and a kind of method that is used for guaranteeing safety at elevator device.
Elevator device according to the present invention comprises the control of safety facilities and safety facilities.Safety facilities according to the present invention comprise at least a mechanical stop tool, and the control of safety facilities then comprises at least a limit, and this limit is set the speed, deceleration/decel of lift car or apart from the vertical distance of allowing in door district.The control of safety facilities also comprises the measurement of time, and the limit of the control of above-mentioned safety facilities then is defined as the function of time.
In a kind of elevator device according to the present invention, the limit of the control of safety facilities is suitable for when the operational mode of elevator device changes, working.
In a kind of elevator device according to the present invention; Safety facilities comprise: be used to the device of the information that receives, the state of the state of the safety return circuit of the direction of this information-related elevator cab movement, speed and/or deceleration/decel, elevator, the mechanical brake of elevator and/or lift car are in the location in door district; Monitoring device is used to monitor the speed of lift car and/or the vertical distance in deceleration/decel and distance door district thereof remains on by in the limit restricted portion; And control setup, if the speed of lift car and/or deceleration/decel and apart from the vertical distance in door district outside the permissible range of setting by limit, control setup is then controlled at least a utensil that stops.Safety facilities further comprise following device: be used to utilize the information of sense of motion, speed and/or deceleration/decel about lift car, about from the preliminary information that arrives at a district of the estimating state of the safety return circuit of elevator, about the state of the mechanical brake of elevator and/or the lift car information in the location in door district, set the operational mode of elevator device.Be used to set the limit of restriction of the minimum allowable deceleration/decel of lift car, be associated with at least a operational mode of elevator device.
These safety facilities can also comprise the device that is used to receive about the information of the service drive mode of elevator, utilize about the device of the operational mode of the information setting elevator device of service drive mode and/or be used for Measuring Time and be used to store the device of switching time of the operational mode of elevator device.Preferably; The speed of the lift car that will be associated and/or the limit of minimum deceleration degree with at least a operational mode of elevator device; Be defined as the function of time; And setting is used for the limit of the maximum permissible speed restriction of lift car, then is associated with at least a operational mode of elevator device.Limit and setting that setting is used for the permissible speed restriction of lift car are used for lift car at least one second limit apart from the vertical distance restriction in door district, can be associated with at least a operational mode of elevator device.
Elevator device also preferably includes measurement mechanism, is used for measuring constantly sense of motion, speed and/or the deceleration/decel of lift car.Being used to control the device that stops utensil and can comprising master cock of elevator device, the device that is used for testing the operation of this master cock is the further device of this elevator device.In a kind of preferred implementation, monitoring device is integrated into the part of the control system of elevator, and, except mechanical brake, mechanical overspeed protection control monitoring and limit switch, said safety facilities are installed in the elevator device as additional safety apparatus.
Be used in the method for elevator device assurance safety; At least one machine security is stopped the safety facilities that utensil is installed on elevator device; And be that at least one limit is set in the control of safety facilities, this limit is set the speed, deceleration/decel of lift car or apart from the vertical distance of allowing in door district.In the method, the passage of Measuring Time, and at least one limit that safety facilities are controlled is set at the variable function with respect to the time.
In a kind of method according to the present invention, when the operational mode of elevator device changes, at least one limit value of safety facilities control.
In a kind of method according to the present invention; The sense of motion, speed of inspection lift car and/deceleration/decel and apart from the state of the mechanical brake of the state of the safety return circuit of the vertical distance in door district, elevator, elevator and/or lift car location in the door district; And the speed of monitoring lift car and/or deceleration/decel and the vertical distance of distinguishing apart from door thereof remain in the permissible range that is limited limit.If one of monitored value receives the value outside permissible range, then at least a utensil that stops to be controlled.According to the present invention; Utilization about sense of motion, speed and/or the deceleration/decel of lift car, apart from the information of the vertical distance in door district, about the elevator according to the estimating state of safety return circuit arrive at the preliminary information in a district, about the state of the mechanical brake of elevator and/or lift car information in the location in door district; Set the operational mode of elevator device, and the limit of the restriction of setting the minimum deceleration degree that is used for lift car is associated with at least a operational mode of elevator device.According to the present invention, also possibly receive information, and utilize operational mode about the information setting elevator device of service drive mode about the service drive mode of elevator.In a kind of preferred implementation; The moment when operational mode of elevator device is changed is stored in the memory device; The passage of Measuring Time; And the monitoring lift car remain in the permissible range that limits limit apart from the vertical distance in door district and the speed and the deceleration/decel of lift car, at least one limit among these limits is defined as the function of time.This method may further include with the next stage: at least a operational mode; The speed of monitoring lift car keeps below definite maximum speed; In at least a operational mode of elevator device, the speed of also monitoring lift car keeps below the permissible speed restriction and lift car remains on apart from an allowable distance place, door district.According to the method for the invention, preferably, routine test stops the operation of the master cock of utensil.
Hereinafter, elevator device of the present invention and method are called according to solution of the present invention jointly.
Dependence has realized a kind of safe elevator system according to solution of the present invention.Employing is according to solution of the present invention; Can avoid danger situation by rope slip or the not desired motion generation that defective mechanical brake caused, and, can also adopt this solution to guarantee that the speed of elevator keeps controlled; For example, under the unsuccessful situation of dynamic brake.Employing can also guarantee the success that elevator emergency stops according to solution of the present invention, and is as the same in the express lift with counterweight not.Can be easily with included safety facilities in the elevator device according to the present invention; Safety apparatus synergistic application with prior art; In this case, the safety facilities that propose among the present invention have improved the safe class of elevator device with optional feature seldom, and; In this solution, can utilize otherwise to be combined in to stop utensil and measurement signal in the elevator device.
Description of drawings
Below, it is specified through one of embodiment of the present invention with reference to accompanying drawing, wherein:
Fig. 1 diagram is according to the operation of the safety device of prior art;
Fig. 2 illustrates the block scheme that switches according between the operational mode of elevator device of the present invention and the operational mode;
Fig. 3 diagram is according to limits of allowing motion more of the present invention, and these limits are set and are used for the restriction that lift car slows down.
The specific embodiment
Elevator device according to the present invention comprises the control of safety facilities and safety facilities.Preferably, with doing the replenishing of prior art safety apparatus, wherein, when the safety apparatus according to prior art when mode is not moved as expected for some reason, the safety facilities that the present invention proposes stop the motion of lift car with this safety facilities.
Safety facilities according to elevator device of the present invention comprise following device: be used to receive and check direction, speed and/or deceleration/decel, the state of elevator mechanical brake, the state of elevator safety loop and the door district information of elevator of elevator cab movement at least.In not having the elevator of counterweight, normally a kind of asymmetric drg of mechanical brake, it is suitable for braking downward movement with the application force bigger than upstroke.These safety facilities further comprise: monitoring device, utilize this monitoring device can monitor lift car and remain in the permissible range that limit limited motion apart from the vertical distance in door district and the speed and/or the deceleration/decel of lift car; And setting device, be used to set the operational mode of elevator device.According to the present invention,, lift car in certain operational mode of elevator device remained in the limit border apart from the speed of the vertical distance in door district and lift car and/or deceleration/decel monitor by means of these safety facilities.Under different operational modes, can motion and different poles limit value be compared, also can be associated with the numerous limits that do not exceed its border and receive monitoring with the operational mode of confirming.If the motion of lift car in the permissible range of being set by limit, is not then controlled a kind of utensil that stops of the lift car that can stop at least.
The operational mode of elevator device refers to that elevator device can residing certain state among this paper, and which kind of operational mode, then confirms by the state of the safety device of elevator device and/or actuating device and/or based on the velocity information and/or the location information of lift car.In these safety facilities, the operation mode that set needn't be corresponding with other operational modes that the safety apparatus or the control convenience that are elevator device are set, although their maybe be identical.For example, according to the viewpoint of these safety facilities, as far as the necessary acceleration of transportation control, at the uniform velocity and braking mode, possibly all belong to operational mode 10 " elevator drive ".
Below, in conjunction with according to the operational mode that is used to set elevator device of the operational mode of the elevator device of Fig. 2 and said safety facilities be used for from the method for a kind of mode switch to another pattern, the operation of these safety facilities is described.In this embodiment, apply the present invention to not have in the elevator device of counterweight, wherein these safety facilities comprise the device that is used to set four kinds of different operational modes.Yet, according to the present invention, maybe with one or more keep watch on the different operational modes that the device the safety facility that limit is associated limits, also can or be less than four kinds, and the present invention also is applicable to the elevator device that has counterweight more than four kinds.
Fig. 2 has presented the switching of elevator device from a kind of operational mode to another kind of operational mode with block diagram.Preferably; Irrelevant with the operational mode of elevator device; Monitor the motion of lift car constantly; Such as speed, deceleration/decel and/or position, although also possibly only being suitable under some operational mode that the limit with motion is associated, starting, safety facilities stop utensil, in the permissible range that the motion of elevator must limit in the limit of this motion as the function of time.Also can a limit be associated with all operational modes of elevator device, monitoring conforms to this limit, and the border that exceeds this limit then starts and stops utensil.For example, in solution, under operational mode 10 (elevator drive) according to Fig. 2; Just during the driven of elevator, can use the restrictive curve 11 that provides among Fig. 1, it is described as elevator advancing in elevator the function of speed and position; Perhaps; Electrical safety facility according to the present invention can be used for replacing mechanical overspeed governor, and the speed limit that the motion of lift car can exceed in no instance then can be set the limit that is used for pattern 10 for.
In solution according to Fig. 2; Except the information of the speed of preferably monitoring lift car constantly and deceleration/decel, state, door district and the lift car of state (open/closed) of safety return circuit that also will monitor at least state (on/off) about mechanical braking, elevator is apart from the information of the vertical distance in door district etc.Based on these information, the operational mode of definition elevator device.These safety facilities also preferably include device and the memory device that is used for Measuring Time, can be stored in this memory device from the information that a kind of operational mode switches to the moment of another kind of operational mode about elevator device.These safety facilities can also comprise the memory device of the limit that storage is associated with each operational mode of elevator device.
Can obtain district's information as follows: for example, be assemblied in the magnet in the elevator explicitly by means of stopping layer position with each, and by means of the inductive switch that is assemblied in lift car, perhaps, by means of other sensors that are suitable for transmission gate district information.Can obtain information as follows: for example about elevator cab movement; The speed sensor of utilization such as pulse coder, perhaps other applicable velocity measurement or location measurement methods of being associated with the cable wire of lift car, overspeed governor or overspeed governor of utilization.Can calculate the speed of lift car according to location information, perhaps, when known departure point, can utilize speed to calculate the position of lift car.In addition,, can calculate the acceleration/deceleration of lift car, and can confirm that the acceleration pick-up of deceleration data is connected with lift car being used for by means of velocity information.
These safety facilities can also comprise following device: be used to receive other information of describing the elevator device state.For example; Can receive and monitor following information: about the state of elevator main contactor; About the state of arrestment, such as the switch of OSG or other anti-relays of creeping utensil and/or this being controlled, and/or about the manual unlocking of elevator mechanical brake, about the load of lift car; Perhaps about other switches that link to each other with elevator device or the state of actuator, and these information can be utilized in the operational mode of setting elevator device.In addition, in setting operational mode, also possibly monitor and utilize other information, such as about the elevator speed benchmark, about service drive mode, about the slow-action pattern or about the information of other instructions of being associated with elevator motion control.
In Fig. 2; Elevator device has four kinds of operational modes that detected by safety facilities; Wherein three kinds be used to set lift car and allow that the limit of restriction of motion is relevant; Motion must remain in the border of this limit, if motion exceeds the border of this limit, then starts and stops utensil.According to the present invention, stopping utensil can be the anti-equipment of creeping of for example prior art.It also can be for example mechanical clutch, guide-rail brake or cable brake, and it directly locks the lifting cable wire of elevator.The employed utensil that stops also can be the cable brake that the cable wire of overspeed governor is locked in its position in solution according to the present invention; Perhaps prevent or brake the utensil of the cable wire wheel rotation of overspeed governor; In this case when lift car move down a bit apart from the time; The cable wire of overspeed governor starts the emergency gear of elevator, and prevents that therefore lift car from creeping downwards, in this case; The effect that stops utensil being played by the mechanism that stops the cable wire of overspeed governor, therefore can be formed by for example cable brake or emergency gear.
Preferably, safety facilities are constantly checked the operational mode of elevator device, and when the operational mode of elevator device changed, safety facilities then switched to the motion of lift car and with the new corresponding limit of operational mode and compare.During the driven 10 (elevator drive) of elevator, the state of monitoring safety return circuit and mechanical brake.If brake engages and safety return circuit are opened, then think the end of elevator drive.If in elevator device, have no failure situations, then practical situation is that elevator car arrives is stopped one of layer position.Be considered to the pattern that switches to 40 " car is in a district " before at elevator device, the sense of motion and the speed of inspection lift car.The big or small direction that provides among Fig. 2 defines like this, makes that the positive dirction of speed v is downward, and, when lift car slows down when moving downward deceleration/decel g for just.
If lift car just in downward movement and speed greater than the terminal speed v that sets
Lim1, think that then elevator device has switched to operational mode 20 (preparation stop, at a high speed), elevator is stopped, for example because failure situations from fast speed.If lift car just is in the highest v at upstroke when perhaps its speed is at downward movement
Lim1, then whether inspection has been in the information in a district from the position that elevator receives lift car.If door district information table plain telegram ladder car is in a district, then set operational mode 40 " car is in a district ".If lift car, judges then that elevator device has switched to operational mode 30 not at Men Qu, wherein make elevator stop (preparation stops, low speed) from low speed.
When elevator device is in the operational mode 20 (elevator prepare to stop, at a high speed), circumstances possibly be for example so a kind of situation, wherein by means of ETSL lift car is stopped.Purpose in this case is: use difference to stop utensil and stop elevator, make lift car reliably stop quickly.Yet;, connects in elevator according to used in the present invention that to stop utensil unsatisfactory when being at full speed; Only if this is inevitable; Otherwise in safety facilities according to the present invention, other safety systems that and if only if combines with elevator device just start this when stopping utensil for the enough deceleration/decel of lift car generation and stop utensil.Especially in not having the express lift of counterweight, do not expect lift car its speed too Gao Shiyong for example emergency gear it is stopped because too high deceleration/decel is to the healthy of passenger and to the operation that stops utensil self and Yan Douhui causes risk.
Therefore, safety facilities according to the present invention are suitable for as additional security measure, as replenishing the prior art safety apparatus.Yet, also can use according to solution of the present invention to replace other safety apparatuss.
The limit that is associated with operational mode 20, being used to of setting that lift car must have is in the restriction of the deceleration of minimum value.Preferably, this limit is defined as the function of time, for example, with mode illustrated in fig. 3.When elevator device switches to pattern 20, with the speed record of the moment of switch taking place and switching instant lift car in memory device.After this, the deceleration/decel of lift car is calculated as the function of time, and monitors whether satisfying the requirement of setting by limit to the motion of lift car.Here, the scope of allowing motion is the zone of limit top, wherein the deceleration/decel g that oversteps the extreme limit
Lim(t), and on the curve below with it (wherein deceleration/decel is g in the zone
Lim(t) or littler than it) g
Lim(t), then cause stopping the startup of utensil.
Among Fig. 3, the moment when t=0 representes constantly that elevator device has switched to operational mode 20.At t=0...t
1Between, be the limit g of deceleration/decel setting
Lim0Be 0, do not slow down because when elevator device just switches to operational mode 20, do not need.At t
1... t
2Between, deceleration/decel has limit g
Lim1, at t
2... t
3Between, the limit of deceleration/decel is g
Lim2, and at t
3Constantly, limit is g
Lim3Preferably, limit is limited g
Lim3＞g
Lim2＞g
Lim1＞g
Lim0In this case; Can give other safety apparatuss such as mechanical braking with the time, thereby stop the motion of lift car with controlled way, and; Only under the other system failure situations, or during for example with the rope slip that promptly stops to be associated, just use is according to the utensil that stops of safety facilities of the present invention.In the elevator of slowly (for example 0.6m/s) motion, after startup stops utensil, utilize simple time delay just can guarantee the success that promptly stops.Yet, in not having the express lift of counterweight (speed for example is 6m/s), stop in the process of utensil in startup; Simple period of service postpones to produce the result of expectation, because adopt the utensil that stops of prior art, and cost time several seconds aspect the motion that stops lift car; And; If mechanical brake defectiveness for example, then time delay can not be set enough greatly, in case the speed of lift car too increases.According to the present invention, adopt the deceleration limit value that is defined as the function of time and increases, can guarantee that the safe emergency of lift car stops.
In pattern 20, also monitor constantly lift car speed and direction and with velocity limit v
Lim1Compare.In this embodiment, only for downward movement is provided with the limit to speed and deceleration/decel, yet, according to the present invention, also can restriction be set for upstroke.If speed reduces to v with enough deceleration/decels
Lim1Below the value, check then whether lift car is in a district, and, according to door district information, confirm elevator device or be in operational mode 30, perhaps be in operational mode 40.
When upstroke appears in lift car,, be lower than v if perhaps downstream rate is less
Lim1, then switch to mode 30 (elevator prepare stop, low speed), wherein monitor the speed of lift car, and it is compared with limit that setting speed limits.The limit v of the maximum permissible speed that is associated with operational mode 30
Lim2Set speed limit, when low speed, allowed the elevator motion state that is lower than this speed limit.When speed is v
Lim2Or compare v
Lim2When big, start and stop utensil.In addition, the speed He Men district information of monitoring lift car is in order to set the switching to next operational mode.When elevator device was in operational mode 30, this situation occurring possibly be for example such failure situations, and promptly wherein the power supply of elevator device is short of; And the speed of elevator is restricted; For example utilize the dynamic brake of electrical motor, perhaps, the terminal stage that for example stops at ETSL.In addition, what might occur is promptly stopping in the downward movement process, and when gravity spurred lift car downwards, in fact it be easy to realize in not having the elevator of counterweight, but after promptly stopping, have the risk that braking is slided.In mode 30,, success do not begin after promptly stopping to lower slider with the safety facilities brake monitoring.Therefore, in operational mode 30, if the speed of lift car surpasses allowable limit according to elevator device of the present invention; For example; When dynamic brake unsuccessful, perhaps, if the cable wire of elevator slides (just; Traction sheave and the friction force that promotes between the cable wire are not enough to keep elevator to be in expected path), then start and stop utensil.
When confirming that elevator has moved to a district, just get into operational mode 40 (car is in a district), then begin the motion of lift car and the comparison of speed limit and position limit.In the door district, the speed of guaranteeing lift car can not for example slide owing to cable wire or brake failure surpasses permissible speed.Further the monitoring lift car rests on a district or the maximum permissible distances apart from the door district in the door district.When noting when leaving constantly information of district, can calculate this distance, and monitor the speed of lift car constantly about lift car.In the example according to Fig. 2, no matter whether the door of lift car opens or closes, and whether elevator be in slow-action and drive and set, and all the speed with lift car compares with identical limit.Yet, can set independent operational mode for it according to the present invention.Therefore, three limit of sports record values are associated with operational mode 40: limit v
Lim2The setting speed restriction is lower than this speed limit is then allowed elevator when low speed state of kinematic motion, and limit h
Lim1And h
Lim2Set the allowable distance of lift car apart from the door district.Allow that position h between these allowable distances, for example works as h
Lim1≤h≤h
Lim2
Fig. 2 shows the safety facilities of the elevator device of not being with counterweight especially, and wherein not controlled accelerated movement can only take place in downward direction.When using in the elevator device that is having counterweight according to solution of the present invention; Wherein possibly cause or downwards or the not controlled motion of the lift car that makes progress according to the load condition failure situations of lift car; In safety facilities, be used to make about switching to another kind of operational mode from a kind of operational mode and/or setting the standard of decision-making of the operational mode of elevator device; Preferably form like this; Make that speed and deceleration/decel are monitored, and set for the limit that makes progress and downward both direction moves.Can set identical limit with the amplitude of downward direction for making progress, but they can differ from one another also.
Fig. 2 illustrates the operation according to elevator device of the present invention and safety facilities thereof with simple embodiment.Yet, can also comprise the device of other operational modes that are used to set elevator device according to safety facilities of the present invention.In a kind of preferred implementation; Safety facilities comprise and are used to receive the information about the manual unlocking of mechanical brake; And in this case, mechanical brake is manual unlocking like this, makes safety facilities can not start and stops utensil; In this case, lift car also can be urged to floor when circuit breaks off.Safety facilities may further include following device: be used to test the operation of the master cock that stops utensil, and the memory device of the safety apparatus that is used to reset, for example after making elevator device.In a kind of preferred implementation, after regularly for example perhaps turning round 50 hours once a day, test stops the operation of the master cock of utensil.
Be integrated in according to being used for reception information and being used to monitor the device of motion in the safety facilities of the present invention; Can utilize the uniting of control system of software program and elevator to realize; Make in order to realize safety facilities; The main apparatus for controlling elevator according to prior art that is used for elevator device of giving adds a switch, when the output of such setting control setup, utilizes this switch to start and stops utensil.The stopper that can use prior art is as a kind of utensil that stops; Make this utensil that stops when receiving the control of a kind of safety apparatus (for example playing the emergency gear that stops the utensil effect of mechanical overspeed governor) except that according to the present invention, also be suitable for operation.
The solution that provides by means of Fig. 2; Can realize following security process at least: when being positioned at the district when lift car or at normal mode or under the slow-action pattern; If lift car is removed near the door district,, then start and stop utensil if perhaps the speed of lift car is too big.If descending promptly stop in deceleration/decel not enough, and if up promptly stop in the speed of lift car attempt to increase after stopping and being lower than allowable limit, then startup stops utensil.If the power supply of elevator is broken off between on-stream period, then attempt stopping or limiting the motion of lift car with safety apparatus, only remain too little and just start the utensil that stops of solution when being necessary according to the present invention at deceleration/decel.
By means of safety facilities according to the present invention; Can also realize following function: when manual mode is opened mechanical brake; Can be suitable for cut-out so that be used to control the device that stops utensil, in this case, when lift car gets into pause outside the door district; If what do not have safety facilities stops the utensil lift car that stops, lift car is driven away.In order to realize this point, can a switch be linked to each other with mechanical brake, the manual unlocking of this switch indication drg, and safety facilities can comprise following device: be used to receive information about this on off state.When power supply off period and existence power supply, also can make safety facilities be suitable for and artificial to rescue.
To those skilled in the art, the present invention obviously is not limited to above-mentioned example, but can improve within the scope of the appended claims.To those skilled in the art, it is equally evident that the functional component of above-mentioned safety facilities needs not to be independent, but can be directly integrated advance in the control system of elevator.Can the limit of allowing motion that be associated with different operational modes be stored in the memory device of the included device of safety facilities.In a kind of preferred implementation; Safety facilities according to the present invention are implemented as with the control unit of the included frequency converter of elevator supply equipment and combine; The control unit of frequency converter also is suitable for reception information in the prior art, in the safety facility, uses this control unit to set the operational mode of elevator device.In this case; Except that the safety apparatus of prior art, realize according to security apparatus of the present invention without any need for additional components fully, and; Needed actual optional feature can be limited to for example relay, can start with this relay and stop utensil.
The present invention is not limited to above-mentioned embodiment, wherein utilizes example to describe the present invention, and in the scope of the notion of the present invention that is defined by the following claims, the present invention can have many improvement and different embodiments.
Claims (15)
1. elevator device; It comprises the control of safety facilities and said safety facilities, and said safety facilities comprise at least a mechanical stop tool, and the control of said safety facilities comprises measurement and at least a limit to the time; Said limit is associated with the operational mode of this elevator device; Set the speed, deceleration/decel of lift car or apart from the vertical distance of allowing in door district, and this limit is defined as the function of time, it is characterized in that:
Said safety facilities comprise: be used to the device of the information that receives, said information be about said elevator cab movement direction, speed, deceleration/decel, apart from the state of the mechanical brake of the state of the safety return circuit of the vertical distance in door district, said elevator, said elevator and said lift car location in the door district; Monitoring device, a vertical distance that is used to monitor speed, deceleration/decel and the distance door district thereof of said lift car remains in the permissible range of being set by said limit; And control setup, if the speed of said lift car, deceleration/decel and apart from the vertical distance in door district outside the permissible range that said limit is set, said control setup is then controlled at least a utensil that stops,
And said safety facilities comprise following device: state and the said lift car of mechanical brake that is used to utilize speed about said lift car, deceleration/decel, said elevator is in the information of the location in door district; Set the operational mode (10 of said elevator device; 20,30), and be used to set the limit of restriction of the minimum allowable deceleration/decel of said lift car; Be associated with at least a operational mode of said elevator device
And said safety facilities comprise following device: be used to utilize the sense of motion about said lift car, said lift car apart from the information of the vertical distance in door district and according to the estimating state of the safety return circuit of said elevator about arriving at the preliminary information in a district; Set the operational mode (10 of said elevator; 20,30).
2. elevator device according to claim 1; It is characterized in that: the control limit value of said safety facilities is suitable for the operational mode (10 when said elevator device; Work when 20,30,40) changing; Wherein when the operational mode of elevator device changed, safety facilities then switched to the motion of lift car and with the new corresponding limit of operational mode and compare.
3. elevator device according to claim 1; It is characterized in that: said safety facilities comprise: be used to receive the device about the information of the service drive mode of said elevator, and utilize the device about the operational mode of the said elevator device of said information setting of service drive mode.
4. elevator device according to claim 1 is characterized in that: set the limit of the maximum permissible speed restriction of said lift car, be associated with at least a operational mode of said elevator device.
5. elevator device according to claim 1; It is characterized in that: set the limit of the permissible speed restriction that is used for said lift car and set at least one second limit that is used near the perpendicular movement restriction of the said lift car door district, be associated with at least a operational mode of said elevator device.
6. elevator device according to claim 1 is characterized in that: said elevator device also comprises measurement mechanism, is used for measuring constantly sense of motion, speed and/or the deceleration/decel of said lift car.
7. elevator device according to claim 1 is characterized in that: being used to of said elevator device controlled the said device that stops utensil and comprises master cock, and said elevator device further comprises the device of the operation that is used to test said master cock.
8. elevator device according to claim 1 is characterized in that: said monitoring device is integrated into the part of the control system of said elevator.
9. elevator device according to claim 1 is characterized in that: except said mechanical brake, mechanical overspeed protection control monitoring and limit switch, said safety facilities are installed in the said elevator device as replenishing safety apparatus.
10. one kind is used for guaranteeing safe method at elevator device, in said method:
-at least a mechanical stop tool is mounted to the safety facilities of said elevator device;
-be that at least one limit is set in the control of said safety facilities, this limit is associated with the operational mode of elevator device, and this limit sets the speed, deceleration/decel of lift car or allow vertical distance apart from what door was distinguished,
The passage of-Measuring Time,
-at least one limit of said safety facilities control is set at the variable function with respect to the time,
It is characterized in that:
The state of the state of the safety return circuit of the sense of motion of the said lift car of-inspection, speed, deceleration/decel, the vertical distance in distance door district, said elevator, the mechanical brake of said elevator and said lift car are in the position in door district;
The speed of the said lift car of-monitoring, deceleration/decel and the vertical distance of distinguishing apart from door thereof remain in the permissible range that is limited said limit; And; If the motion of said lift car is then controlled at least a utensil that stops outside the permissible range of being set by said limit;
-utilize sense of motion about said lift car, speed, deceleration/decel, apart from the information of the vertical distance in door district, according to the relevant said elevator of the estimating state of said safety return circuit arrive at the preliminary information in a district, about the state of the mechanical brake of said elevator and said lift car information in the position in door district, set the operational mode of said elevator device;
-at least a operational mode, the deceleration/decel of monitoring said lift car remains in the permissible range of being set by said limit, and said limit is set the restriction of the minimum allowable deceleration/decel that is used for said lift car.
11. method according to claim 10 is characterized in that:
-when the operational mode (10 of said elevator device; 20; When 30,40) changing, at least one limit value of said safety facilities control; Wherein when the operational mode of elevator device changed, safety facilities then switched to the motion of lift car and with the new corresponding limit of operational mode and compare.
12. method according to claim 10 is characterized in that:
-receive information about the service drive mode of said elevator, and utilize the operational mode of the said said elevator device of information setting about service drive mode.
13. method according to claim 10 is characterized in that:
The speed of the said lift car of-monitoring remains in the permissible range of being set by said limit, and said limit is set the restriction of the maximum permissible speed that is used for said lift car.
14. method according to claim 10 is characterized in that:
-at least a operational mode of said elevator device; The speed of monitoring said lift car remains in the permissible range of being set by said limit; Said limit is set the restriction of the permissible speed that is used for said lift car, and, in addition; Monitor the position of the said lift car in the elevator at least, make near the perpendicular movement of the said lift car door district remain in the permissible range of setting by said limit.
15. method according to claim 10 is characterized in that: being used to of said elevator device controlled the said device that stops utensil and comprises master cock, and said method further comprised with the next stage:
Test the operation of said master cock termly.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20060727 | 2006-08-14 | ||
| FI20060727A FI119767B (en) | 2006-08-14 | 2006-08-14 | Elevator system and method for ensuring safety in the elevator system |
| PCT/FI2007/000196 WO2008020111A1 (en) | 2006-08-14 | 2007-08-06 | Elavator system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101506080A CN101506080A (en) | 2009-08-12 |
| CN101506080B true CN101506080B (en) | 2012-11-28 |
Family
ID=36950631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800303587A Expired - Fee Related CN101506080B (en) | 2006-08-14 | 2007-08-06 | Elavator system |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8869945B2 (en) |
| EP (1) | EP2051924A4 (en) |
| CN (1) | CN101506080B (en) |
| AU (1) | AU2007285644B2 (en) |
| FI (1) | FI119767B (en) |
| HK (1) | HK1133416A1 (en) |
| WO (1) | WO2008020111A1 (en) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI118333B (en) * | 2004-01-09 | 2007-10-15 | Kone Corp | Equipment in the elevator for detecting and stopping uncontrolled movement of the bodywork |
| JP4879911B2 (en) * | 2005-01-11 | 2012-02-22 | オーチス エレベータ カンパニー | Elevator with elevator rescue system |
| FI120302B (en) * | 2008-04-17 | 2009-09-15 | Kone Corp | Arrangement and procedure in a lift without counterweight |
| CA2731667C (en) * | 2008-08-18 | 2017-01-31 | Inventio Ag | Method for monitoring a brake system in an elevator system and corresponding brake monitor for an elevator system |
| EP2358624A1 (en) * | 2008-12-17 | 2011-08-24 | Otis Elevator Company | Elevator braking control |
| WO2010070378A1 (en) | 2008-12-19 | 2010-06-24 | Otis Elevator Company | Elevator door frame with electronics housing |
| WO2010150341A1 (en) * | 2009-06-22 | 2010-12-29 | 三菱電機株式会社 | Elevator device |
| FI20090335A (en) * | 2009-09-16 | 2011-03-17 | Kone Corp | Method and arrangement for preventing uncontrolled movement of the elevator car |
| EP2319791A1 (en) | 2009-11-10 | 2011-05-11 | Inventio AG | Lift assembly |
| EP2332872A1 (en) * | 2009-12-11 | 2011-06-15 | Inventio AG | Selective elevator braking during emergency stop |
| FI20105033A (en) | 2010-01-18 | 2011-07-19 | Kone Corp | Procedure for controlling the movement of a lift basket and lift system |
| US9120644B2 (en) * | 2010-05-21 | 2015-09-01 | Otis Elevator Company | Braking device |
| FI122393B (en) * | 2010-10-11 | 2011-12-30 | Kone Corp | Method in the event of an elevator emergency stop and lift safety arrangement |
| EP2681142B1 (en) * | 2011-02-28 | 2023-08-23 | Otis Elevator Company | Elevator car movement control in a landing zone |
| DE102011054590B4 (en) * | 2011-10-18 | 2022-06-09 | Elgo-Electronic Gmbh & Co. Kg | Device for detecting the position of an elevator car and method for operating an elevator system |
| CN102556784B (en) * | 2011-12-30 | 2014-01-08 | 日立电梯(上海)有限公司 | Elevator brake control device and control method thereof |
| CN102587785B (en) * | 2012-02-27 | 2014-08-27 | 宁波市鄞州美必盛自动门厂 | Control method of household automatic door |
| FI123506B (en) * | 2012-05-31 | 2013-06-14 | Kone Corp | Elevator control and elevator safety arrangement |
| CN102795524B (en) * | 2012-07-27 | 2014-07-23 | 石家庄五龙制动器股份有限公司 | ABS brake control circuit of elevator brake system |
| US9463952B2 (en) * | 2012-08-30 | 2016-10-11 | Steve Romnes | Apparatus and methods for controlling elevator positioning |
| US10099894B2 (en) * | 2013-03-07 | 2018-10-16 | Otis Elevator Company | Active damping of a hovering elevator car based on vertical oscillation of the hovering elevator car |
| FI125316B (en) * | 2013-09-10 | 2015-08-31 | Kone Corp | Procedure for performing emergency stops and safety arrangements for lifts |
| EP2848568B1 (en) * | 2013-09-17 | 2022-07-20 | KONE Corporation | A method and an elevator for stopping an elevator car using elevator drive |
| FI124903B (en) * | 2013-11-01 | 2015-03-13 | Kone Corp | Elevator as well as a method for using the elevator control system to monitor the load on the car and / or to determine the load situation |
| EP2918536B1 (en) * | 2014-03-12 | 2022-06-22 | ABB Schweiz AG | Condition monitoring of vertical transport equipment |
| US20170217726A1 (en) * | 2014-08-07 | 2017-08-03 | Otis Elevator Company | Braking system for hoisted structure and method for braking |
| US9975733B2 (en) * | 2015-01-26 | 2018-05-22 | Kevin Cunningham | Elevator safety device |
| DE102015211488A1 (en) * | 2015-06-22 | 2016-12-22 | Thyssenkrupp Ag | Safety device of an elevator installation |
| US10906775B2 (en) | 2015-08-19 | 2021-02-02 | Otis Elevator Company | Elevator control system and method of operating an elevator system |
| DE112015006825T5 (en) * | 2015-08-21 | 2018-05-24 | Mitsubishi Electric Corporation | winder |
| RU2717604C2 (en) * | 2015-09-25 | 2020-03-24 | Инвенцио Аг | Elevator control device |
| DE102016100533A1 (en) * | 2016-01-14 | 2017-07-20 | Thyssenkrupp Ag | Method for monitoring a first brake of a car of an elevator system |
| US9809418B2 (en) | 2016-02-29 | 2017-11-07 | Otis Elevator Company | Advanced smooth rescue operation |
| DE102016216369A1 (en) * | 2016-08-31 | 2018-03-01 | Thyssenkrupp Ag | Method for operating an elevator installation |
| EP3345852B1 (en) * | 2017-01-09 | 2023-03-01 | KONE Corporation | Power controller |
| EP3744672A1 (en) * | 2019-05-31 | 2020-12-02 | Cedes AG | Limit curve control for elevators |
| CN110395630B (en) * | 2019-07-26 | 2021-12-07 | 上海三菱电梯有限公司 | Elevator control circuit |
| EP3939922A1 (en) * | 2020-07-16 | 2022-01-19 | Otis Elevator Company | Elevator safety circuit |
| CN115402895A (en) | 2021-05-28 | 2022-11-29 | 奥的斯电梯公司 | Band-type brake monitoring circuit system, elevator system and band-type brake monitoring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034856A (en) * | 1975-12-12 | 1977-07-12 | Westinghouse Electric Corporation | Elevator system |
| US4923055A (en) * | 1989-01-24 | 1990-05-08 | Delaware Capital Formation, Inc. | Safety mechanism for preventing unintended motion in traction elevators |
| US5869794A (en) * | 1995-11-08 | 1999-02-09 | Inventio Ag | Method and device for increased safety in elevators |
| EP1431229A1 (en) * | 2001-09-28 | 2004-06-23 | Mitsubishi Denki Kabushiki Kaisha | Elevator device |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI76768C (en) * | 1987-05-27 | 1988-12-12 | Kone Oy | FOERFARANDE FOER BESTAEMNING AV EN HISS 'POSITION SAMT EN PULSVAONINGSRAEKNARE. |
| US4977982A (en) * | 1989-12-26 | 1990-12-18 | Otis Elevator Company | Elevator sheave brake safety |
| JPH0455273A (en) * | 1990-06-22 | 1992-02-21 | Mitsubishi Electric Corp | Control device of elevator |
| US5266757A (en) * | 1990-09-17 | 1993-11-30 | Otis Elevator Company | Elevator motion profile selection |
| ATE321723T1 (en) * | 2001-09-03 | 2006-04-15 | Inventio Ag | SITUATION-DEPENDENT REACTION IN CASE OF A FAULT IN THE AREA OF A DOOR OF AN ELEVATOR SYSTEM |
| FI113365B (en) * | 2003-02-27 | 2004-04-15 | Kone Corp | Procedure for controlling an elevator and apparatus performing the procedure |
| US7073632B2 (en) * | 2003-05-27 | 2006-07-11 | Invento Ag | Safety system for restraining movement of elevator car when car doors are open |
| EP1688383A4 (en) * | 2003-11-21 | 2011-09-21 | Mitsubishi Electric Corp | Elevator system |
| US7353916B2 (en) * | 2004-06-02 | 2008-04-08 | Inventio Ag | Elevator supervision |
| FI20041044A (en) * | 2004-07-30 | 2006-02-08 | Kone Corp | Elevator |
| FI118335B (en) * | 2004-07-30 | 2007-10-15 | Kone Corp | Elevator |
| FI119878B (en) * | 2005-02-04 | 2009-04-30 | Kone Corp | A system and method for improving elevator safety |
-
2006
- 2006-08-14 FI FI20060727A patent/FI119767B/en not_active IP Right Cessation
-
2007
- 2007-08-06 CN CN2007800303587A patent/CN101506080B/en not_active Expired - Fee Related
- 2007-08-06 EP EP07788735.4A patent/EP2051924A4/en not_active Withdrawn
- 2007-08-06 AU AU2007285644A patent/AU2007285644B2/en not_active Ceased
- 2007-08-06 WO PCT/FI2007/000196 patent/WO2008020111A1/en active Application Filing
-
2009
- 2009-02-17 US US12/372,486 patent/US8869945B2/en not_active Expired - Fee Related
- 2009-10-08 HK HK09109327.6A patent/HK1133416A1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4034856A (en) * | 1975-12-12 | 1977-07-12 | Westinghouse Electric Corporation | Elevator system |
| US4923055A (en) * | 1989-01-24 | 1990-05-08 | Delaware Capital Formation, Inc. | Safety mechanism for preventing unintended motion in traction elevators |
| US5869794A (en) * | 1995-11-08 | 1999-02-09 | Inventio Ag | Method and device for increased safety in elevators |
| EP1431229A1 (en) * | 2001-09-28 | 2004-06-23 | Mitsubishi Denki Kabushiki Kaisha | Elevator device |
Also Published As
| Publication number | Publication date |
|---|---|
| FI20060727A (en) | 2008-02-15 |
| WO2008020111A1 (en) | 2008-02-21 |
| US20090178889A1 (en) | 2009-07-16 |
| US8869945B2 (en) | 2014-10-28 |
| FI119767B (en) | 2009-03-13 |
| EP2051924A1 (en) | 2009-04-29 |
| CN101506080A (en) | 2009-08-12 |
| FI20060727A0 (en) | 2006-08-14 |
| AU2007285644B2 (en) | 2012-11-01 |
| AU2007285644A1 (en) | 2008-02-21 |
| HK1133416A1 (en) | 2010-03-26 |
| EP2051924A4 (en) | 2013-09-25 |
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